摘要
基于声音信号衰减模型,引入测量权限的概念,提出一种确定权限值的简易方法,其利用目标声音信号强度定位,通过测量目标的声信号强度,采用加权最小二乘法实现对目标位置的估计。该方法提高了目标定位精度,降低了计算能量消耗,同时延长了网络使用寿命。
Based on acoustic target signal energy propagation decay model, and introduce the concept of threshold, a simple method is presented to confirm the threshold. Based on acoustic source target localization and acoustic signal intension of target measurement, the arithmetic of weight least square estimates (WLSE) is adopted for target localization. The method can improve localization precision, reduce computing consume and prolong the network life span.
出处
《兵工自动化》
2008年第7期63-65,共3页
Ordnance Industry Automation
基金
广西科学研究与技术开发计划应用基础专项
桂科基(0731019)
关键词
WSN
声音目标定位
加权最小二乘法
测量权限
WSN
Acoustic source target localization
Weight least square estimate
Popedom measurement